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DR. ANTOINE JEAN ELHAJJAR M.D.
NPI 1558328203
Specialist in La Quinta, CA

Active since April 27, 2006PECOS EnrolledAccepts Medicare Assignment
88.22/100
CMS Quality Rating
46100 WASHINGTON ST, LA QUINTA, CA 92253(760) 340-0528(760) 674-1590 Get Directions Write a Review

NPPES record last updated: July 7, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 7, 2020, Dec 9, 2019 (2 updates tracked since 2019).

About Dr. Antoine Jean Elhajjar M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ANTOINE JEAN ELHAJJAR M.D. (NPI 1558328203) is an individual specialist in La Quinta, California, licensed in California (A53481) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Rancho Mirage, and is a graduate of Other (1989).

NPPES Registry Identity

NPI1558328203
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDR. ANTOINE JEAN ELHAJJARCredential: M.D.
Location Address46100 WASHINGTON STLa Quinta, CA 92253-2042
Mailing Address46100 Washington StLa Quinta, CA 92253-2042 · (760) 340-0528 · Fax (760) 674-1590
Phone(760) 340-0528
Fax(760) 674-1590
Sole ProprietorYes
Medical School CMSOtherGraduated 1989
Enumeration DateApril 27, 2006
Last NPPES UpdateJuly 7, 20202 updates tracked since enumeration
NPPES CertifiedJuly 7, 2020
✔ NPI 1558328203 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in CA · A53481
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Also ListedInternal Medicine · Sleep MedicineTaxonomy 207RS0012X · License A53481 (CA)
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License A53481 (CA)
Also ListedClinic/Center · Sleep Disorder DiagnosticTaxonomy 261QS1200X
46100 WASHINGTON ST, La Quinta, CA 92253
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Secondary Practice Location 1

Location 172057 Highway 111Rancho Mirage, CA 92270-4927 · Phone (760) 340-0528

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Antoine Jean Elhajjar M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5597655381
PECOS Enrollment IDI20040316001316
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Antoine Elhajjar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Antoine J Elhajjar M.D., Inc.
Same address
Sleep Disorder Diagnostic
46100 WASHINGTON ST
La Quinta, CA 92253
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Antoine J Elhajjar MD Inc
  • 4 clinicians in this Medicare group
NPI 1790806370 (760) 340-0528

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
311 services225 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
75 services62 patients
Needle measurement of electrical activity in arm or leg muscles, complete study 95886
This procedure, known as an electromyography (EMG), involves inserting a small needle into your arm or leg muscles to measure their electrical activity. This complete study helps diagnose issues with nerves or muscles, providing valuable data for your treatment plan.
70 services32 patients
Nerve conduction, 13 or more studies 95913
Nerve conduction studies involve 13 or more tests to check the speed and strength of signals traveling between your nerves and muscles. It helps diagnose conditions affecting nerves and muscles. The test involves small shocks and may cause minor discomfort.
35 services32 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
29 services29 patients
Sleep study in sleep lab (6 years or older) 95810
A sleep study in a sleep lab is a non-invasive overnight test that monitors your body while you sleep. It helps doctors understand your sleep patterns and identify any issues like sleep apnea or insomnia. You'll be connected to equipment that tracks your heart rate, brain waves, breathing, and movements.
21 services21 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

88.22/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality62.9
Improvement Activities40

Reported Quality Measures

Closing the Referral Loop: Receipt of Specialist Report
25%300 patients2/55-star benchmark: 87%
Dementia: Cognitive Assessment
0%44 patients
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
Lower rates are better for this measure.
98%241 patients1/55-star benchmark: 91%
Documentation of Current Medications in the Medical Record
98%4,499 patients4/55-star benchmark: 100%
Preventive Care and Screening: Screening for Depression and Follow-Up Plan
0%2,587 patients1/55-star benchmark: 97%
Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented
0%4,233 patients1/55-star benchmark: 61%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Patients screened: 0% · 1,237 patients
0%1,237 patients
Statin Therapy for the Prevention and Treatment of Cardiovascular Disease
83%381 patients4/55-star benchmark: 91%
Use of High-Risk Medications in Older Adults
Lower rates are better for this measure.
Patients appropriateDiagnosis: 1% · 792 patients
Patients totalRate: 2% · 799 patients
1%799 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 18

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
9 suppliers72 claims72 services$34.15 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
8 suppliers99 claims99 services$72.61 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
8 suppliers78 claims189 services$30.98 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
7 suppliers56 claims275 services$17.18 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
6 suppliers39 claims215 services$14.96 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
8 suppliers126 claims126 services$49.87 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TIM LEKIC M.D., PH.D.
Psychiatry & Neurology (Neurology)
46100 WASHINGTON ST
LA QUINTA, CA 92253
Riverside County (760) 340-0528
ANTOINE J ELHAJJAR M.D., INC.
Clinic/Center (Sleep Disorder Diagnostic)
46100 WASHINGTON ST
LA QUINTA, CA 92253
Riverside County (760) 340-0528
DIANA LONDONO
Psychiatry & Neurology (Neurology)
46100 WASHINGTON ST
LA QUINTA, CA 92253
Riverside County (760) 340-0528

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Antoine Elhajjar's NPI number?

The NPI number for Antoine Elhajjar is 1558328203. It was assigned to this individual provider in the NPPES registry on April 27, 2006.

Where is Antoine Elhajjar located?

Antoine Elhajjar practices at 46100 Washington St, La Quinta, CA 92253. The listed phone number is (760) 340-0528.

What is Antoine Elhajjar's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Antoine Elhajjar enrolled in Medicare?

Yes. Antoine Elhajjar is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Antoine Elhajjar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Antoine Elhajjar reassigns Medicare benefits to Antoine J Elhajjar M.D., Inc. (La Quinta, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Antoine Elhajjar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Antoine Elhajjar was last updated on July 7, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.